<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<input type="checkbox" id="test"  name="xfz" />
	</body>
	<script type="text/javascript">
	
		/*
		 	用户操作的是谁？ property
		*/
		var testNode  =document.querySelector("#test");
		testNode.onclick=function(){
			debugger
		}
			
	</script>
</html>
